Senior Medical Science Liaison
Vaxcyte
Software Engineering
San Carlos, CA, USA
USD 204k-238k / year + Equity
Posted on Apr 28, 2026
Join our Mission to Protect Humankind!
Vaxcyte is a clinical-stage vaccine innovation company engineering high-fidelity vaccines to protect humankind from the consequences of bacterial diseases, which have serious and costly health consequences when left unchecked. Working to eradicate or treat bacterial infections such as invasive pneumococcal disease, Group A Strep, and Shigella is just the beginning. Our path to success is clear and well-defined, and Vaxcyte is set up to go the distance.
WHAT we do is every bit as important as HOW we do it! Our work together is guided by four enduring core values:
*RETHINK CONVENTION: We bring creative and intellectual diversity to every facet of the work we do in order to innovate and re-innovate the way vaccines are delivered.
*AIM HIGH: We embody our collectively audacious goal to courageously make the most complex biologics ever attempted to protect humankind.
*LEAD WITH HEART: Everyone leads at Vaxcyte with a kindness-first, inclusive approach to collaboration and vigorous debate that advances our business objectives.
*MODEL EXCELLENCE: The magnitude of our challenge requires our shared commitment to demonstrating integrity, accountability, equality and clarity across communications and decision making.
Summary:
We are seeking a scientifically driven and communicative Senior Medical Science Liaison (Sr. MSL) to join our Medical Affairs team. This field-based role is critical in supporting the scientific exchange around our vaccine pipeline, engaging with healthcare professionals (HCPs), public health experts, and key opinion leaders (KOLs). The Sr. MSL will play a pivotal role in advancing vaccine education, supporting immunization strategies, and informing internal teams with real-world insights.
Essential Functions:
- Advanced Stakeholder Management: Build and maintain peer-to-peer relationships with prominent physicians, researchers, key organizations, and high profile key opinion leaders (KOLs) at academic institutions and clinics.
- Scientific Engagement: Conduct peer-to-peer discussions with prominent physicians, researchers, and other key opinion leaders (KOLs) regarding unmet medical need, vaccine efficacy, safety, and public health impact.
- Medical Education: Present clinical data and disease prevention strategies at conferences, advisory boards, and educational forums.
- Public Health Collaboration: Partner with local and national public health organizations to support immunization campaigns and address vaccine hesitancy.
- Advisory boards and conferences: Participate in and help organize advisory board meetings with KOLs.
- Represent Vaxcyte at relevant medical conferences and scientific meetings, engaging in scientific exchange and gathering competitive intelligence.
- Clinical Trial Support: Support in identification of clinical trial sites and provide scientific input on vaccine-related protocols and investigator-initiated studies.
- Insight Collection: Gather field intelligence on emerging infectious disease trends, vaccination barriers, and unmet medical needs.
- Cross-functional collaboration: Work closely with internal teams to update/align scientific messaging and contribute to strategic planning.
- Compliance: Uphold ethical standards and regulatory guidelines in all field activities.
Requirements:
- Advanced degree (PharmD, PhD, MD, or equivalent) in life sciences, immunology, infectious diseases, or public health preferred.
- At least 8 years relevant experience in a clinical, research, or industry-related medical role; experience in Medical Affairs preferred.
- Deep understanding of immunization science, epidemiology, and vaccine development.
- Exceptional communication, presentation, and interpersonal skills.
- MSL positions are field-based and require significant travel, which can vary depending on the assigned territory.
- Other combinations of education and/or experience may be considered.
Reports to: Senior Director, Medical Affairs
Location: Remote - United States
Compensation:
The compensation package will be competitive and includes comprehensive benefits and an equity component.
Salary Range: $204,000 - $238,000
We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.